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W. s. COOPER.

GLOBE VALVE No. 74,303. Patented Feb. 25, 1868.

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J36 I u WILLIAM S. COOPER, OF PHILADELPHIA, PENNSYLVANIA.

Letters 1 mm No. 74,803, dated February 25, 1868.

IMPROVEMENT In GLOBE-VALVES.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, WILLIAM S. COOPER, of Philadelphia, in the State of Pennsylvania, have invented a new and improved Method of Constructing Globe-Valves; and I do hereby declare that the following is a full, clear, and exact d scription thereof, reference being had to the accompanying drawings, and the letters 0f refer- 'ence marked thereon, similar letters referring to similar parts throughout the series.

The object of my invention is to provide a valve for steam or water, which will not need packing around the stennand which valve can be reground when leaky without removing the body from its position on the pipes.

To enable others skilled 'to make and use my invention, I will now proceed to describe its construction and operation.

Figure 1 is an elevation of the valve, part being in section to show theinternal arrangement, the valve being at present closed.

Figure 2 is a. plan of the valve, showing its angular shank.

, Figure 3 is a plan of the central guide-piece,'with its angular socket, to receive the shank of the valve.

In fig. 1, A is the body of the valve, and may be of such a i'prm as to suit the purpose to which it is to be applied. The cap or bonnet is shown at B, and may bescrcwed on the outside or inside of the neck of-the body, as desired, and is provided with a conical seat, the object of which will be hereinafter shown. The spindle S is provided with a collar, N, the upper edge of which is to fit the conical seat in the cap B, by which means a steam or water-tightjoint is secured. The lower face of the collar N is made fiat, to be operated upon by a spring. The lower part of the spindle S is provided with a screw, 0. The valve V may be. made of any suitable shape, but I provide it with a square shank, X, inside of which shank I cut a thread to receive the screw 0 of the spindle S. I make a central guide-piece, G, with an angular socket, and an annular flange, W. .In

the upper part of the central guide-piece G, I make an annular recess to receive the spring D. The annular flange W is fitted in a corresponding recess out in the neck of the valve-body A, to receive it. When the parts of the valve are fitted together ready for use,the angular shank X of the valveVwill be insertedin the angular socket of the central guide-piece G, and the annular flange W of said central guide-piece is fitted in the neck of the body A in such a way that it is held firmly in position, and prevented from rotating by the cap or bonnet B. The spring D, when resting in the recess made to'i'eeeive it, exerts its expansive force against the under side of the collar N of the spindle S, thus forcing its upper conical surface to its seat in the cap or bonnet B, and making there a perfectly tight joint, thus avoiding the necessity of any packing which would require fre qucnt renewals. i

When the spindle S is rotated, all vertical motion is prevented by its collar N being held in place by the cap B and the spring 1). The screw 0 accomplishes the withdrawing of the valve V from its seat in the body A. A contrary motion of the spindle S causes a return of theyalve V to its seat to close the passage-way. All rotary motion of the valve V is prevented by its angular shank X, which slides readily in the angular socket of the centralIgnide-piece I}. When the valve has become worn and leaky, a regrinding is necessary, to accomplish which the cap B is unscrewed, and the central guide-piece G and the spring 1) are removed from the stem, when the valve V is screwed firmly upon the spindle" S, after which the valve is returned to its seat, and the cap 13 screwed down to its place, as before. The abrading-material having been previously applied, a rotary mot-ion is now given to the spindle and valve, during which operation the valve will be held in a correct position by means of the spindle S fitting neatly in the bonnet B. A tight joint is thus quickly efi'ectcd with out recourse being had to any of the crude appliances hitherto employed in such an operation. A similar operation effects a steam-tight joint between the collar N of the spindle S and its seat in the cap B. When it is desired, a washer, of rubber or some other suitable material, may be placed around the spindle S, under the collar N, as shown at m, in thePlate II, the object of which is to give greater security to the joint between the cap 13 and the body A, and central guidc-piece G, as shown; It also prevent any access to the collar N of any ahrading or corroding-matcrial in the passing fluid. A similar precautionmay be taken against the inju rious matter in the passing fluid acting on the screw of the spindle and valve. This is accomplished by stretching a piece of rubber tube, t over projections or beads on the lower part of the socket of the central guidepiece G, and on the shank of the valve V, as shown. The elasticity of the tube is sufiicient so as not to prevent the free opening and closing of the valve, when desired.

I do not propose to confine myself to the form of spring as indicated at D one, if I see desirable.

I do notelaim the rubber packing m, the spring D, nor the conical ground joint in the bonnet B, as these but may substitute some other were the subject of Letters Patent, No. 59,122, dated October 23, 1866, granted to William S. Cooper, (myselfi) What'I claim, and desire to secure by Letters Patent, is- 1. The combination of the central guide-piece G, cap 13, antibody A, substantially as herein set forth. 2. I also claim the arrangement of the spindle S, central guide-piece G, squareshank X of the valve Vwith the cap B and body A; substantially upon the principle as herein set forth.

WM; S. COOPER.- Witnesses:

.EDM. F. BROWN, G. H. MELLEN. 

